Acer Predator X27U OLED - 10 bit problems,can use an adapter DisplayPort to USB-C in order to connec

RazIeLzzzN1

Hello everybody,

I have a small problem and i might need your help for this.

As you know this monitor has HDMI 2.0 and DisplayPort 1.4, my laptop (Dell G15) has HDMI 2.0 and Thunderbolt 4.

I remember i read somewhere on Acer website that:
- connection HDMI to HDMI can be 2,560 x 1,440, 60 Hz, 10 bit or 2,560 x 1,440, 144 Hz, 8 bit
- connection USB-C to USB-C can be 2,560 x 1,440, 240 Hz, 8 bit

My obvious question is the only way i can have 2,560 x 1,440, 240 Hz, 10 bit, is to connect over DisplayPort (which i don't have on my laptop)?

Can you tell me if i can use an adapter DisplayPort to USB-C in order to connect cable DisplayPort to DisplayPort, to my laptop i can get 2,560 x 1,440, 240 Hz, 10 bit? And if it's possible, can you recommend a model?

Kind regards,

AlexB

[Edited the thread to add issue detail]

StevenGen

Acer Predator X27U OLED - 10 bit problems,can use an adapter DisplayPort to USB-C in order to connec

RazIeLzzzN1

Oct 19, 2024

Hello everybody,

I have a small problem and i might need your help for this.

As you know this monitor has HDMI 2.0 and DisplayPort 1.4, my laptop (Dell G15) has HDMI 2.0 and Thunderbolt 4.

I remember i read somewhere on Acer website that:
- connection HDMI to HDMI can be 2,560 x 1,440, 60 Hz, 10 bit or 2,560 x 1,440, 144 Hz, 8 bit
- connection USB-C to USB-C can be 2,560 x 1,440, 240 Hz, 8 bit

My obvious question is the only way i can have 2,560 x 1,440, 240 Hz, 10 bit, is to connect over DisplayPort (which i don't have on my laptop)?

Can you tell me if i can use an adapter DisplayPort to USB-C in order to connect cable DisplayPort to DisplayPort, to my laptop i can get 2,560 x 1,440, 240 Hz, 10 bit? And if it's possible, can you recommend a model?

Kind regards,

AlexB

[Edited the thread to add issue detail]

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If your laptop has the TBT4 then it can output a display image at 2560x1440 resolution at 240Hz refresher rate (check the specs at Dell) as you can use the DP to USB-C cable as it will work and your X27U should get an image at those resolutions and refresher rate.

Btw, this is how I've connected a Dell 27" 165 refresher rate monitor to my Nitro AN515-56 laptop to its TBT4 port and to the Dell monitor DP v1.4 port with the same cable and I'm getting QHD 2560 x 1440 @ 165 Hz and with a HDMI cable @ 144Hz. Good luck.

Just for additional information from the Acer Predator X27U monitors service guide, these are the USB 3.0, DP v1.4, and HDMI v2.0 oem cables recommended by Acer to connect this monitor with:

This is the full spec of the Predator X27U monitor

If this answers your question and solved your query please "Click on Yes" or "Click on Like" if you find my answer useful👍

RazIeLzzzN1

Hello StevenGen,

I forgot to mention that it is working with USB-C to USB-C cable 2,560 x 1,440, 240 Hz, 8 bit, but i'm not allowed to change to 10 bit.

Max Refresh Rate Over DP @ 10-bit 240 Hz
Max Refresh Rate Over HDMI @ 10-Bit 60 Hz

So i understand that over HDMI i can get 10 bit (the system let's my change color depth just with 60 Hz which i do, but USB-C to USB-C i'm not allowed by accessing "NVIDIA Control Panel -> Display -> Change resolution -> 3. Apply the following settings".

I saw a bunch of cables online but no one it's saying if it gets 10 bit, i wouldn't test a thunderbolt 3/4 to DP in order to see same resolution of 2,560 x 1,440, 240 Hz, 8 bit, like a i have now with cable USB-C to USB-C.

Kind regards,

AlexB